dawidfryn
New Member
Last Activity: 10-26-2024, 01:28 PM
Joined: 05-12-2024
Location: Osl
-
Pl2101 46ohm capacitors on pch have resistances of 45ohm and kohm, no short circuits. I don't have an oscilloscope, but measurements with a multimeter show PWM for these 4 coils at 1.475V... -
sorry for my poor english. Could you tell me exactly what I should check?Leave a comment:
-
Legion Y540-15IRH no display
Legion Y540-15IRH motherboard NM-C221 Rev: 2.0
the laptop turns on with no image, the keyboard lights up. No voltage on the four coils marked in the photo pl3001, pl3002, pl3003 and pl3004. Voltages and resistance of drmos pu3001:
1- 20v, 3M
2,3,4- 0V, 1,8ohm
5,6,7,8,9,10,11,12,13- GND
14- 19V, 3M
15- 1475V, 8,4M
16- 3,27V, 37,2K
17- 0,220v, 49,7K
18- 1,23V, 2,93M
19- GND
20- 3,02V, 14K
21- 3V, ol
...
No activity results to display
Leave a comment: